Machine for making pulp tubes



v W. R. SEGLE.

MACHINE FOR MAKING PULP TUBES.

APPLICATION FILED JUNE 28, 1920.

l,395,?%2i. Patente i Nov. 1, 1921.

raw eya WILLIAM R. SEIGLE, OF NEW YORK, N.

MACHINE FOR MAKING PULP TUBES.

it wer till it a U Application filed June 28,

To all whom it may concern:

it known that I, WILLiAM R. Salem, a citizen of the United States ofAmerica, and resident of New York, in the county of New .1 York andState of New York, have invented rently herewith,

new and useful Improvementsin Machines for ltclaking Pulp Tubes, ofwhich the following is a specification.

My invention relates to the manufacture of wound paper or pulp tubes andhas for its particular objects the construction of dense, thick walledtubes of larger diameter than have heretofore been obtainable, andfurther, the construction of" tubes of the aforesaid character fromasbestos fiber or P This invention consist of, or is embodied in, amachine by means of which I have been enabled to construct asbestosfiber tubes of high and uniform density, because of thesecharacteristics adapted when out into suitable segments to serve aslinings for brakebands, especially when prepared for service byimpregnation with a cementitious, fiber reinforcing filler such ashardened oil. Such special products of the machine herein to bedescribed form the subject matter of other applications for patent filedby me concurand serially numbered 392,373,. and 392,374. The operationof the herein described machine volves the per: formance of a new methodbf forming tubes of felted fibrous material, which forms the subjectmatter of another application for patent, filed by me concurrentlyherewith, serially numbered 392,372. In my United States Letters patentnumbered 1,037,670, dated September 3, 1912, there is described amachine adapted to the construction of pulp tubes of high density andinherent strength, and the subject matter of the present specificationdescriptively includes functionally related factors substantially thesame as those which characterized the invention set forth in the saidpatent.

Since one ultimate object of this present invention is the production ofa material eminently suitable to serve as brake-band linings,homogeneity of the fibrous felted structure of the pulp tube or cylinderis a prime requisite. The desired homogeneity negatively characterizedby practically bsence of any stratifioations or teens in the wall of thepulp tube, and

' Specification of Letters Patent.

felt C and the N represents PatentedNov. 1, 1921. 192:0. Serial No.392,371.

adapts the tubular structure to the reception and inclusion in its body,of impregnants which," by their binding and cementitious effect on thefibers which are comprised in the tube-structure, transform it into afriction sustaining material of uniform consistency throughout.

In the drawings hia annexed, which,

illustrate my invention,

Figure 1 is a diagrammatic elevationview of a pulp-tube machine; and

Fig. 2 is a broken longitudinal section of the suction roll on which thepulp tube is wound. v

The mechanical details of machines of the. general chalracter indicatedare too [Well known to require full illustratidn or explanation.

In Fig.1, A indicates the cylinder mold, C the felt, which is preferablythin, as and for the reasons described in my aforesaid Patent No.1,037,670; D a thickly felted couch roll, which may be mounted on apivoted frame, as D; E' a segmental section roll, with the well-knownsuction commutator (not means of which suction is maintained be- I tweenselected segment-partitions such as F, I

G represents and relaxed between others; the area over which suction isthus malntained; this area terminates near to, but

short of the line of tangency between the mandrel roll, presently to bedescribed; H, J, K, L and M are guide rolls for the felt C; and I, I arewhip-rolls.

the mandrel roll, on which the pulp tube is wound. This is a continuoussuction roli""and is connected to the branch P of the 'siiction pipe 0;this branch I I may be corrugated as at O', or otherwise provided withmeans to permit the mandrel roll N to bear heavily on the felt G, and toindicated) by pulp-tank, B the rise as the tubematerial. accretes uponthe mandrel roll. The branch Q from the suction pipe 0 communicates withthe interior of the se mental suction roll E. A compacting roll mountedon a pivoted frame S, bears on' the top of themandrel roll. N, or uponthe pulp tube in thecourse of its construction; An adjustable weight Tmay be provided, wherewith to adjust the pressure with which the rollRbears upon roll N, and

consequentglycauses roll N to bear upon the felt C, supported by thesegmental roll E.

tate with relation to the head plates while suction is maintained withinit. The outer jacket N 1s provided with end sleeves, as N",

which make a substantially air-tight fit, as

at N, with the imperforate portions of the inner cylinder N. v

The outer jacket N provides the perforated or reticulated surface onwhich the pulp tube is wound. This jacket is removable from the innercylinder N, so that when a pulp tube has been built up on the jacket,the jacket with the tube on it may be removed, and replaced by a similarjacket on which another tube is built.

The operation of the machine comprising the foregoing factors, isasfollows:

By mean of the heavily felted couch roll D, afilm or web of interlacedor felted fibers is taken off the cylinder mold B onto the felt C andcarried thereon to the segmental suction roll E. The suction maintainedon this roll through the region indicated at G cxtracts a considerableportion of the water contained in the fibrous web, but is relaxed at aline, along the cylindrical surface of the roll which is far enough fromthe line of tangency of the mandrel roll N to permit the water remainingin the fibrous web to re gain its outer surface and moisten it, so thatit unites intimately with layers previously wound upon the mandrel roll.This intimacy of incorporation of successive layers of fibrous web witheachother is further insured by the continuous suction main-.

tained in the mandrel roll, which draws the fresh, wet, and relativelymobile fibers into firm union with previously deposited fibrous layers,and at the same time by drawing water, carried to the outer layer by thefibrous Web coming, from the felt C, through the whole accumulated massof fiber, felting the-fibers ofsuccessively applied layers together, sothat upon completion, the pulp tube-on the mandrel roll is 1n everypractical and substantial respect. a single homogeneous feltedstructure, free from thev web-carrier and segmental"suction roll.

heterogeneity or lack of unity which characterizes structures formed ofdiscernible or separable laminae.

' 'The compacting roll R contributes to the density and homogeneity ofthe built-up pulp-tube by exerting pressure on the tube as itaccumulates on the mandrel roll, both at the line of tangency of theroll R itself,

and that of the mandrel roll N upon the felt C. j

' When the pulp tube has acquired the desired thickness of wall, themachine is" stopped, the jacket N with the pulp tube" N, and a similarjacket put on the cylinder, which is then remounted in the head platesP. The formation of another pulp-tube is then begun.

After the pulp tubes have been cured by drying to any desired extent,they can be slit longitudinally and removed from the jacket N It is notintended that these pulp tubes shall be taken from the jackets whilemoist and plastic, and be flattened, as is the practice in making millboard and the like. The machine herein described is designed to producepulp tubes of such thickness in re lat-ion to diameter that suchflattening would be quite impracticable. As to the product itself, aprincipal object of this invention is to construct dense, thick walledpulp tubes which shall be allowed to dry and become set in cylindricalform, so that segments cut from such tubes shall be of suitable sha eand proportions to be attached to'bra e shoes and the like, and servethereon as linings.

In general, pulp tubes comparable in respect to density and thickness ofwall to those manufactured on machines of the character described in mysaid Patent No. 1,037,- 570, but of much larger diameter than has been.found practicable to attempt on such machines, can be produced by meansof the invention herein described.

I claim:

1. In a machine for forming wound tubes of felted fibrous material, thecombination of a web-carrier, a segmental suction roll on whichthe'web-carrier travels, and a suction mandrel roll bearing-on theweb-carrier and segmental suction roll. i

2. In a machine for forming wound tubes of feltedfibrous material, thecombination of a wcb-'carrier, a segmental suction rollon which theweb-carrier travels, a suctlon mandrel roll bearlng on the web-carrierand se inentalsuction roll, and a compacting r01 i 4. In a machine forforming wound tubes of felted fibrous material, the combination of aweb-carrier, a segmental suction roll on which the web-carrier travels,a continuous uction mandrel roll bearing on the web carrier andsegmental suction roll, and a--compiloting roll bearing on the mandrelroll.

5. In a machine for forming wound tubes of feltedfibrous material, thecombination of a web-carrier, a segmental suction roll on which the.web-carrier travels, and a suction lli) mandrel roll beaiilig on theweb-carrier and segmental suction roll, said mandrel roll comprising aperforate removable jacket.

6. In a machine for forming woundtubes of felted fibrous material, thecombination of a Web-carrier a segmental suction roll on which theweb-carrier travels, a suction mandrel roll bearingon the veb carrierand segmental suction roll, said mandrel roll comprising a perforateremovable jacket, and a compacting roll bearing on the mandrel roll. 7.In a machine for forming Wound tubes of felted fibrous material, thecombination of a web-carrier, a segmental suction roll on which the Webcarrier travels, and a suction mandrel roll bearing on the web-carrierand segmental suction roll, said mandrel roll comprising aperforateinner cylinder and a perforate removable outer jacket.

8. In a machine for forming Wound tube of felted fibrous material, thecombination of a Web-carrier, a segmental suction roll on which the webcarrier travels, a suction mandrel roll bearing on the Web-carrier, andsegmental suction roll, said mandrel roll comprising a. perforate innercylinder, a perforate removable outer jacket, and a compacting rollbearing on the mandrel roll.

Signed by me at New York, N. 1 this WILLIAM R. Salem;

25th day of June,

